柯林斯詞典optical fibre (optical fibres) 1. N-VAR An optical fibre is a very thin thread of glass inside a protective coating. Optical fibres are used to carry information in the form of light. 光導(dǎo)纖維 返回 optical fibre劍橋詞典a long , thin glass rod through which very large amounts of information can be sent in the form of light 光學(xué)纖維，光纖 也見 fibre optics 返回 optical fibre